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Finding the Fourth Proportional to 261,425.04, 392,174.28 and 103,669.44

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Solution

The fourth proportional to 261,425.04, 392,174.28 and 103,669.44 is: 155,518.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,425.04 : 392,174.28 = 103,669.44 : x
  2. Step 2: Convert to fraction form
    261,425.04/392,174.28 = 103,669.44/x
  3. Step 3: Cross multiply
    261,425.04x = 392,174.28 × 103,669.44
  4. Step 4: Simplify right side
    261,425.04x = 40,656,487,990.00
  5. Step 5: Solve for x
    x = 40,656,487,990.00/261,425.04
  6. Step 6: Final answer
    x = 155,518.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.